Dalvin Washington was 38 when he was shot and killed on September 21, 2020, after an altercation on Arseno Drive in Rayne, Louisiana. The shooting prompted a police investigation in the community where he lived.

Investigators identified Trey Prejean as the person responsible. Prejean was arrested in connection with the fatal shooting. In January 2025, Prejean, then 31, pleaded guilty to a lesser charge of manslaughter and was taken into custody to await sentencing, which was set for April 10; the maximum penalty for the charge is 40 years of hard labor.

Anyone who knew Dalvin, witnessed the events on Arseno Drive that night, or has information relevant to this case is asked to come forward.